DINOSAUR TYPE SPECIMENS A B C D E F F G H I J K L M N O P Q R S T U V W X Y Z Frequently Asked Questions Additional References > Labrosaurus ferox Lambeosaurus paucidens [see Hadrosaurus paucidens] > Labrosaurus ferox - Marsh 1888   Catalogue: USNM 2315 Material: lower jaw Classification: Saurischia, Theropoda, Tetanurae, Allosauridae Collected: M. P. Felch, 1883 Place: Morrison Formation, Cañon City Quarry, near Garden Park, Colorado, USA Time: Kimmeridgian, Late Jurassic Original Publication: O. C. Marsh. 1888. American Journal of Science 27:333 This dinosaur is now considered to be a junior synonym of Allosaurus. The type material consist of a lower jaw that was damaged during the life of the animal, possibly the result of an injury (perhaps a fight with another theropod?) or from a fall. The lower jaw was found in sedimentary deposits that represent the “Jurassic downstream” part of the rock sequence from which our mounted specimen of Allosaurus came. Our Allosaurus also suffered an injury during its lifetime and does not have the corresponding part of its lower jaw, so it is possible that Labrosaurus really belongs to our specimen of Allosaurus!
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